<?xml version="1.0" encoding="UTF-8"?>
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    <admin>
        <current_status>
            <date>2026-06-24</date>
            <code>REL</code>
            <processing_site>PDBe</processing_site>
        </current_status>
        <revision_history>
            <revision version="1.0" date="2026-06-24">
                <change_list>
                    <model>
                        <revision_type>INITIAL_RELEASE</revision_type>
                        <provider>REPOSITORY</provider>
                    </model>
                    <metadata>
                        <revision_type>INITIAL_RELEASE</revision_type>
                        <provider>REPOSITORY</provider>
                    </metadata>
                    <fsc>
                        <revision_type>INITIAL_RELEASE</revision_type>
                        <provider>REPOSITORY</provider>
                    </fsc>
                    <half_map part="1">
                        <revision_type>INITIAL_RELEASE</revision_type>
                        <provider>REPOSITORY</provider>
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                        <revision_type>INITIAL_RELEASE</revision_type>
                        <provider>REPOSITORY</provider>
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                    <image>
                        <revision_type>INITIAL_RELEASE</revision_type>
                        <provider>REPOSITORY</provider>
                    </image>
                    <mask part="1">
                        <revision_type>INITIAL_RELEASE</revision_type>
                        <provider>REPOSITORY</provider>
                    </mask>
                    <primary_map>
                        <revision_type>INITIAL_RELEASE</revision_type>
                        <provider>REPOSITORY</provider>
                    </primary_map>
                </change_list>
            </revision>
        </revision_history>
        <sites>
            <deposition>PDBe</deposition>
            <last_processing>PDBe</last_processing>
        </sites>
        <key_dates>
            <deposition>2025-06-23</deposition>
            <header_release>2026-06-24</header_release>
            <map_release>2026-06-24</map_release>
            <update>2026-06-24</update>
        </key_dates>
        <grant_support>
            <grant_reference>
                <funding_body>European Research Council (ERC)</funding_body>
                <code>101043452</code>
                <country>European Union</country>
            </grant_reference>
            <grant_reference>
                <funding_body>Ministry of Education, Youth and Sports of the Czech Republic</funding_body>
                <code>LX22NPO5103</code>
                <country>Czech Republic</country>
            </grant_reference>
            <grant_reference>
                <funding_body>Ministry of Education, Youth and Sports of the Czech Republic</funding_body>
                <code>CZ.02.01.01/00/22_008/0004607</code>
                <country>Czech Republic</country>
            </grant_reference>
            <grant_reference>
                <funding_body>European Research Council (ERC)</funding_body>
                <code>1233487</code>
                <country>European Union</country>
            </grant_reference>
        </grant_support>
        <title>Bacteriophage 812 prohead II with minor capsid proteins with partial occupancy</title>
        <authors_list>
            <author>Zlatohurska M</author>
            <author>Prochazkova M</author>
            <author>Cienikova Z</author>
            <author>Fuzik T</author>
            <author>Plevka P</author>
        </authors_list>
        <keywords>Bacterophage, phage cycle, capsid assembly, single particle analysis, the HK97 fold, Herelleviridae, VIRUS</keywords>
    </admin>
    <crossreferences>
        <citation_list>
            <primary_citation>
                <journal_citation published="false">
                    <author order="1">Zlatohurska M</author>
                    <author order="2">Plevka P</author>
                    <title>Asymmetric unit of bacteriophage 812 prohead II with minor capsid proteins with partial occupancy</title>
                    <journal_abbreviation>To be published</journal_abbreviation>
                    <external_references type="CSD">0353</external_references>
                </journal_citation>
            </primary_citation>
        </citation_list>
        <pdb_list>
            <pdb_reference>
                <pdb_id>9roz</pdb_id>
                <relationship>
                    <in_frame>FULLOVERLAP</in_frame>
                </relationship>
            </pdb_reference>
        </pdb_list>
        <other_db_list>
            <db_reference>
                <db_name>EMDB</db_name>
                <accession_id>EMD-54135</accession_id>
                <content_type>associated EM volume</content_type>
                <details>Asymmetric unit of bacteriophage 812 prehead  with minor capsid proteins with partial occupancy</details>
            </db_reference>
        </other_db_list>
    </crossreferences>
    <sample>
        <name>Staphylococcus phage 812K1/420</name>
        <supramolecule_list>
            <virus_supramolecule supramolecule_id="1">
                <name>Staphylococcus phage 812K1/420</name>
                <parent>0</parent>
                <macromolecule_list>
                    <macromolecule>
                        <macromolecule_id>1</macromolecule_id>
                    </macromolecule>
                    <macromolecule>
                        <macromolecule_id>2</macromolecule_id>
                    </macromolecule>
                    <macromolecule>
                        <macromolecule_id>3</macromolecule_id>
                    </macromolecule>
                </macromolecule_list>
                <details>Single particle analysis of capsid-like structures from the infected S. aureus cells</details>
                <sci_species_name ncbi="3434241">Staphylococcus phage 812K1/420</sci_species_name>
                <natural_host database="NCBI">
                    <organism ncbi="1280">Staphylococcus aureus</organism>
                    <strain>1137</strain>
                </natural_host>
                <virus_shell shell_id="1">
                    <name>capsid</name>
                    <diameter units="Å">1040.0</diameter>
                    <triangulation>16</triangulation>
                </virus_shell>
                <virus_type>VIRION</virus_type>
                <virus_isolate>STRAIN</virus_isolate>
                <virus_enveloped>false</virus_enveloped>
                <virus_empty>true</virus_empty>
            </virus_supramolecule>
            <complex_supramolecule supramolecule_id="2">
                <name>The asymmetric unit of bacteriophage 812 prohead II  with minor capsid proteins with partial occupancy</name>
                <parent>1</parent>
                <macromolecule_list>
                    <macromolecule>
                        <macromolecule_id>1</macromolecule_id>
                    </macromolecule>
                    <macromolecule>
                        <macromolecule_id>2</macromolecule_id>
                    </macromolecule>
                    <macromolecule>
                        <macromolecule_id>3</macromolecule_id>
                    </macromolecule>
                </macromolecule_list>
                <natural_source database="NCBI">
                    <organism ncbi="3434241">Staphylococcus phage 812K1/420</organism>
                </natural_source>
            </complex_supramolecule>
        </supramolecule_list>
        <macromolecule_list>
            <protein_or_peptide macromolecule_id="1">
                <name>Putative Ig-like protein</name>
                <natural_source database="NCBI">
                    <organism ncbi="3434241">Staphylococcus phage 812K1/420</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.019624799</theoretical>
                </molecular_weight>
                <number_of_copies>5</number_of_copies>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>AKKNVNDVLQQESVTVADKYLQVKVNRDGYTRTHEGQYAYKVVSEGEELFLYPVQTDGKGTLNVMKKSPIAYTDGDNIHF
VVNTVVDPYNHSFIRTEDIKGLDKGKQLIQAFLAFVEDRFKFGVYNVFVANNKEDVLSIVDPTDNDADEVKDSLEHAHED
VIADFPASPARKDV</string>
                    <external_references type="UNIPROTKB">A0A0U1UYD0</external_references>
                </sequence>
            </protein_or_peptide>
            <protein_or_peptide macromolecule_id="2">
                <name>Major capsid protein</name>
                <natural_source database="NCBI">
                    <organism ncbi="3434241">Staphylococcus phage 812K1/420</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.048446559</theoretical>
                </molecular_weight>
                <number_of_copies>16</number_of_copies>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>SFQTGYGITPDTQIDAGALRREILDDQITMLTWTNEDLIFYRDISRRPAQSTVVKYDQYLRHGNVGHSRFVKEIGVAPVS
DPNIRQKTVSMKYVSDTKNMSIASGLVNNIADPSQILTEDAIAVVAKTIEWASFYGDASLTSEVEGEGLEFDGLAKLIDK
NNVINAKGNQLTEKHLNEAAVRIGKGFGTATDAYMPIGVHADFVNSILGRQMQLMQDNSGNVNTGYSVNGFYSSRGFIKL
HGSTVMENELILDESLQPLPNAPQPAKVTATVETKQKGAFENEEDRAGLSYKVVVNSDDAQSAPSEEVTATVSNVDDGVK
LSINVNAMYQQQPQFVSIYRQGKETGMYFLIKRVPVKDAQEDGTIVFVDKNETLPETADVFVGEMSPQVVHLFELLPMMK
LPLAQINASITFAVLWYGALALRAPKKWARIKNVRYIAV</string>
                    <external_references type="UNIPROTKB">A1YTN4</external_references>
                </sequence>
            </protein_or_peptide>
            <protein_or_peptide macromolecule_id="3">
                <name>Virion component</name>
                <natural_source database="NCBI">
                    <organism ncbi="3434241">Staphylococcus phage 812K1/420</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.007896915</theoretical>
                </molecular_weight>
                <number_of_copies>1</number_of_copies>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>SKHIEITMSSGAKYFLVSTDEKSYNRQDIDYMLRGMDETSIKVYTESAITSPQVYINPNRIESFKIVF</string>
                    <external_references type="UNIPROTKB">A0A0U1WYT8</external_references>
                </sequence>
            </protein_or_peptide>
        </macromolecule_list>
    </sample>
    <structure_determination_list>
        <structure_determination structure_determination_id="1">
            <method>singleParticle</method>
            <aggregation_state>particle</aggregation_state>
            <specimen_preparation_list>
                <single_particle_preparation preparation_id="1">
                    <buffer>
                        <ph>7.5</ph>
                        <component>
                            <concentration units="mM">10.0</concentration>
                            <formula>NaCl</formula>
                            <name>sodium chloride</name>
                        </component>
                        <component>
                            <concentration units="mM">10.0</concentration>
                            <formula>CaCl2</formula>
                            <name>calcium chloride</name>
                        </component>
                        <component>
                            <concentration units="mM">50.0</concentration>
                            <formula>Tris-HCl</formula>
                            <name>Tris(hydroxymethyl)aminomethane hydrochloride</name>
                        </component>
                        <details>Phage buffer, adjusted by Tris-HCl (pH 8) to a final pH of approx. 7.5</details>
                    </buffer>
                    <grid>
                        <model>Quantifoil R2/1</model>
                        <material>GOLD</material>
                        <mesh>300</mesh>
                        <support_film film_type_id="1">
                            <film_material>GRAPHENE</film_material>
                            <film_topology>HOLEY</film_topology>
                        </support_film>
                        <pretreatment>
                            <type>PLASMA CLEANING</type>
                            <time units="s">110</time>
                            <atmosphere>OTHER</atmosphere>
                        </pretreatment>
                    </grid>
                    <vitrification>
                        <cryogen_name>ETHANE</cryogen_name>
                        <chamber_humidity units="percentage">100</chamber_humidity>
                        <chamber_temperature units="K">283.15</chamber_temperature>
                        <instrument>FEI VITROBOT MARK IV</instrument>
                        <details>One-side blotting. </details>
                    </vitrification>
                </single_particle_preparation>
            </specimen_preparation_list>
            <microscopy_list>
                <single_particle_microscopy microscopy_id="1">
                    <microscope>TFS KRIOS</microscope>
                    <illumination_mode>FLOOD BEAM</illumination_mode>
                    <imaging_mode>BRIGHT FIELD</imaging_mode>
                    <electron_source>FIELD EMISSION GUN</electron_source>
                    <acceleration_voltage units="kV">300</acceleration_voltage>
                    <nominal_cs units="mm">2.7</nominal_cs>
                    <nominal_defocus_min units="µm">0.8</nominal_defocus_min>
                    <nominal_defocus_max units="µm">2.8000000000000003</nominal_defocus_max>
                    <nominal_magnification>81000.0</nominal_magnification>
                    <specimen_holder_model>FEI TITAN KRIOS AUTOGRID HOLDER</specimen_holder_model>
                    <cooling_holder_cryogen>NITROGEN</cooling_holder_cryogen>
                    <image_recording_list>
                        <image_recording image_recording_id="1">
                            <film_or_detector_model>FEI FALCON III (4k x 4k)</film_or_detector_model>
                            <detector_mode>COUNTING</detector_mode>
                            <number_grids_imaged>1</number_grids_imaged>
                            <number_real_images>21755</number_real_images>
                            <average_electron_dose_per_image units="e/Å^2">40.0</average_electron_dose_per_image>
                        </image_recording>
                    </image_recording_list>
                </single_particle_microscopy>
            </microscopy_list>
            <singleparticle_processing image_processing_id="1">
                <image_recording_id>1</image_recording_id>
                <particle_selection>
                    <number_selected>68779</number_selected>
                </particle_selection>
                <ctf_correction>
                    <type>PHASE FLIPPING AND AMPLITUDE CORRECTION</type>
                </ctf_correction>
                <startup_model type_of_model="EMDB MAP">
                    <emdb_id>EMD-8304</emdb_id>
                </startup_model>
                <final_reconstruction>
                    <number_classes_used>1</number_classes_used>
                    <resolution units="Å" res_type="BY AUTHOR">3.2</resolution>
                    <resolution_method>FSC 0.143 CUT-OFF</resolution_method>
                    <software_list>
                        <software>
                            <name>RELION</name>
                            <version>5.0beta</version>
                        </software>
                    </software_list>
                    <number_images_used>8100</number_images_used>
                </final_reconstruction>
                <initial_angle_assignment>
                    <type>MAXIMUM LIKELIHOOD</type>
                    <software_list>
                        <software>
                            <name>RELION</name>
                            <version>5.0beta</version>
                        </software>
                    </software_list>
                </initial_angle_assignment>
                <final_angle_assignment>
                    <type>MAXIMUM LIKELIHOOD</type>
                    <software_list>
                        <software>
                            <name>RELION</name>
                            <version>5.0beta</version>
                        </software>
                    </software_list>
                </final_angle_assignment>
                <final_three_d_classification>
                    <number_classes>3</number_classes>
                    <software_list>
                        <software>
                            <name>RELION</name>
                            <version>5.0beta</version>
                        </software>
                    </software_list>
                </final_three_d_classification>
            </singleparticle_processing>
        </structure_determination>
    </structure_determination_list>
    <map format="CCP4" size_kbytes="4000001">
        <file>emd_54135.map.gz</file>
        <symmetry>
            <space_group>1</space_group>
        </symmetry>
        <data_type>IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)</data_type>
        <dimensions>
            <col>1000</col>
            <row>1000</row>
            <sec>1000</sec>
        </dimensions>
        <origin>
            <col>0</col>
            <row>0</row>
            <sec>0</sec>
        </origin>
        <spacing>
            <x>1000</x>
            <y>1000</y>
            <z>1000</z>
        </spacing>
        <cell>
            <a units="Å">1283.5</a>
            <b units="Å">1283.5</b>
            <c units="Å">1283.5</c>
            <alpha units="deg">90.0</alpha>
            <beta units="deg">90.0</beta>
            <gamma units="deg">90.0</gamma>
        </cell>
        <axis_order>
            <fast>X</fast>
            <medium>Y</medium>
            <slow>Z</slow>
        </axis_order>
        <statistics>
            <minimum>-0.035419133</minimum>
            <maximum>0.06524326</maximum>
            <average>0.00012476686</average>
            <std>0.0023772002</std>
        </statistics>
        <pixel_spacing>
            <x units="Å">1.2835</x>
            <y units="Å">1.2835</y>
            <z units="Å">1.2835</z>
        </pixel_spacing>
        <contour_list>
            <contour primary="true">
                <level>0.01</level>
                <source>AUTHOR</source>
            </contour>
        </contour_list>
        <label>::::EMDATABANK.org::::EMD-54135::::</label>
        <annotation_details>The I4 reconstruction of the phage 812 prehead with minor capsid proteins with partial occupancy was computed using RELION 5. This file is the unmasked output of the post-processing.</annotation_details>
    </map>
    <interpretation>
        <modelling_list>
            <modelling>
                <initial_model>
                    <access_code>5LII</access_code>
                    <chain>
                        <source_name>PDB</source_name>
                        <initial_model_type>experimental model</initial_model_type>
                    </chain>
                </initial_model>
                <refinement_protocol>AB INITIO MODEL</refinement_protocol>
                <refinement_space>REAL</refinement_space>
            </modelling>
        </modelling_list>
        <segmentation_list>
            <segmentation>
                <file>emd_54135_msk_1.map</file>
            </segmentation>
        </segmentation_list>
        <half_map_list>
            <half_map format="CCP4" size_kbytes="4000001">
                <file>emd_54135_half_map_2.map.gz</file>
                <symmetry>
                    <space_group>1</space_group>
                </symmetry>
                <data_type>IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)</data_type>
                <dimensions>
                    <col>1000</col>
                    <row>1000</row>
                    <sec>1000</sec>
                </dimensions>
                <origin>
                    <col>0</col>
                    <row>0</row>
                    <sec>0</sec>
                </origin>
                <spacing>
                    <x>1000</x>
                    <y>1000</y>
                    <z>1000</z>
                </spacing>
                <cell>
                    <a units="Å">1283.5</a>
                    <b units="Å">1283.5</b>
                    <c units="Å">1283.5</c>
                    <alpha units="deg">90.0</alpha>
                    <beta units="deg">90.0</beta>
                    <gamma units="deg">90.0</gamma>
                </cell>
                <axis_order>
                    <fast>X</fast>
                    <medium>Y</medium>
                    <slow>Z</slow>
                </axis_order>
                <statistics>
                    <minimum>-0.0138168605</minimum>
                    <maximum>0.028622344</maximum>
                    <average>-0.00004249517</average>
                    <std>0.0016958003</std>
                </statistics>
                <pixel_spacing>
                    <x units="Å">1.2835</x>
                    <y units="Å">1.2835</y>
                    <z units="Å">1.2835</z>
                </pixel_spacing>
                <contour_list>
                    <contour primary="true">
                        <source>AUTHOR</source>
                    </contour>
                </contour_list>
                <label>::::EMDATABANK.org::::EMD-54135::::</label>
                <annotation_details>Half map was calculated in RELION with the Ewald sphere curvature correction.</annotation_details>
            </half_map>
            <half_map format="CCP4" size_kbytes="4000001">
                <file>emd_54135_half_map_1.map.gz</file>
                <symmetry>
                    <space_group>1</space_group>
                </symmetry>
                <data_type>IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)</data_type>
                <dimensions>
                    <col>1000</col>
                    <row>1000</row>
                    <sec>1000</sec>
                </dimensions>
                <origin>
                    <col>0</col>
                    <row>0</row>
                    <sec>0</sec>
                </origin>
                <spacing>
                    <x>1000</x>
                    <y>1000</y>
                    <z>1000</z>
                </spacing>
                <cell>
                    <a units="Å">1283.5</a>
                    <b units="Å">1283.5</b>
                    <c units="Å">1283.5</c>
                    <alpha units="deg">90.0</alpha>
                    <beta units="deg">90.0</beta>
                    <gamma units="deg">90.0</gamma>
                </cell>
                <axis_order>
                    <fast>X</fast>
                    <medium>Y</medium>
                    <slow>Z</slow>
                </axis_order>
                <statistics>
                    <minimum>-0.014534569</minimum>
                    <maximum>0.028314209</maximum>
                    <average>-0.00004432258</average>
                    <std>0.0016764702</std>
                </statistics>
                <pixel_spacing>
                    <x units="Å">1.2835</x>
                    <y units="Å">1.2835</y>
                    <z units="Å">1.2835</z>
                </pixel_spacing>
                <contour_list>
                    <contour primary="true">
                        <source>AUTHOR</source>
                    </contour>
                </contour_list>
                <label>::::EMDATABANK.org::::EMD-54135::::</label>
                <annotation_details>Half map was calculated in RELION with the Ewald sphere curvature correction.</annotation_details>
            </half_map>
        </half_map_list>
    </interpretation>
</emd>
